.wrap {
    position: relative;
    width: 100%;
    height: 0;
    padding-top: 15%;

    .pic {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
    }

    .link-bg {
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        height: 2rem;
        line-height: 2rem;
        color: #fff;
        background: rgba(0, 0, 0, 0.7);
        padding: 0 1rem;
        transition: all 0.3s ease-in-out;

        .link {
            font-size: 1.5rem;
            text-decoration: underline;
            color: #fff;
            z-index: 100;
        }
    }
}
.swiper-container:hover .link-bg {
    top: calc(100% - 2rem);
}

.swiper-pagination {
    bottom: 10px;
    left: 50%;
    width: 10rem;
    transform: translateX(-50%);
}
